部分集合

ぶぶんしゅうごう

noun

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subset(mathematics)

部	section, bureau, dept, class, copy, part, portion, counter for copies of a newspaper or magazine
分	part, minute of time, segment, share, degree, one's lot, duty, understand, know, rate, 1%, chances, shaku/100
集	gather, meet, congregate, swarm, flock
合	fit, suit, join, 0.1